Abstract: A high-resolution simulation system using the weather research and forecasting (WRF) model was developed by conducting sensitivity experiments with three boundary-layer parameterization schemes, namely, Yonsei University (YSU), Mellor–Yamada–Janjic (MYJ), and quasi-normal scale elimination (QNSE), to identify the optimal configuration. The YSU scheme demonstrated superior performance in capturing region-specific wind patterns, enabling a 3-km-resolution simulation via multilayer nesting. Results indicate a substantial improvement in the determination accuracy of WRF-downscaled wind speeds, particularly during extreme events exemplified by Hurricane Julia’s wind structure replication. These outcomes provide critical scientific support for offshore wind project siting, grid dispatch optimization, and risk mitigation strategies in northern Colombia while establishing a transferable methodology for wind-resource assessment in complex coastal environments globally.